Riddle me this...
Ok my car doesn't have positive if only one wheel turns when it's jacked up, right? In that case I did two turns of the wheel and ended up with 2 3/4 turns of the driveshaft. Making it a 2.76. I've used a GPS to measure my speed and it's 3000 Rpm at 65. Now without all the computer stuff to calibrate my tach, my ear tells me it's turning a lot of rpm, not 2500. So I'm really thinking my torque converter really may be losing that much. When I punch it the rpms will go way up and stay there (about 2600) until I hit a certain speed and then they'll climb with the mph. Also at 65 if I punch it the rpms will climb a bit to say 3300 then go up with mph.
Do you think when the local shop rebuilt my torque converter they screwed it up?
The first description points to a 2bbl carb, and depending on your speed/rpm at the moment you floored it could be considered normal.
If the TC jumps to 3300 from 3000 that is about 10% slip and could also be considered normal.
Therefore, I would get a second opinion on either the tach or the speedO. Either the trans is slipping or One of them is a liar. And I really doubt your trans is slipping; Cuz your TC is right at 10%. This might be a little high, but you can't get to 3000 from 2461 with that TC alone,cuz this is a 22% slippage factor.So that would put the direct clutch at 12% slippage. Transmissions,don't slip 12% and then suddenly stop slipping, at that 12%.
So I'm sticking to a liar in the hen-house.
Here is your speed to rpm formula.
(65mphx1056conversion factor x2.76gear)/ 24.5tire height x3.1416 converts to tire roll-out =
2461rpm at Zero-slip.
Depending on the power the engine makes and the drag on the chassis, Your actual observed rpm could be a few percent either way from that. I estimate from 2400 to 2580. Unless your engine is in a really,really,poor state of tune, then a maximum of 2700.
That's my best guess.